您要查找的是不是：
- He found a piece of fossil of an ancient bird. 他发现一块古代鸟类的化石。
- This fossil may be over 2 million years old. 这化石可能超过二百万年了。
- Can you date the fossil exactly? 你能确定这化石的确切年代吗?
- Isn't Professor Bell an old fossil? 贝尔教授真是个老顽固。
- A central point or focus of bacterial growth in a living organism. 滋生的地方，生长处在活的有机物中细菌滋长的中心点或聚集地
- A microscopic fossil, as of a pollen grain or unicellular organism. 微体化石一种微小的化石，如花粉粒或单细胞有机体的化石
- If we squander our fossil fuels, we threaten civilization. 如果我们浪费矿物燃料，我们就威胁文明。
- The gossip tossed the mossy blossom fossil. 爱讲闲话者向上抛长满苔藓的花化石。
- A finite list of choices; our finite fossil fuel reserves. 为数有限的选择; 我们有限的矿物燃料贮量
- The bacterial cells are rendered competent. 使细菌细胞变成感受态。
- The solid matter in which a fossil or crystal is embedded. 基质，脉石嵌有化石或水晶的固体物质
- A bacterial enzyme; bacterial diseases. 细菌酶；细菌性疾病
- Coal is usually referred to as a fossil fuel. 煤通常被称为矿物燃料。
- Organic wastes decompose by bacterial action. 有机废物通过细菌活动可以分解。
- The fossil may over 2 millon years. 这化石可能超过二百万年了.
- Bacterial digestion may continue. 细菌可能继续分解。
- This is a story of fossil culture written by XX. 这是由一个叫XX的人编织的化石文化的故事。
- Bacterial infection that can be cured. 细菌感染可以治愈。
- Archaeologists dated the fossil after much study. 经过认真地研究后,考古学家们最后确定了该化石的年代。
- Who is at risk for bacterial endocarditis? 谁有患细菌性心内膜炎的危险?
